--- /dev/null	2016-09-01 15:38:59.076007815 -0400
+++ new/modules/javafx.graphics/src/test/decora/java/com/sun/scenario/effect/compiler/parser/AddExprTest.java	2016-09-11 10:36:34.993888763 -0400
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2008, 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.sun.scenario.effect.compiler.parser;
+
+import com.sun.scenario.effect.compiler.JSLParser;
+import com.sun.scenario.effect.compiler.model.BinaryOpType;
+import com.sun.scenario.effect.compiler.tree.BinaryExpr;
+import org.antlr.runtime.RecognitionException;
+import org.junit.Before;
+import org.junit.Test;
+import static org.junit.Assert.assertEquals;
+
+public class AddExprTest extends MultExprTest {
+
+    private String mult;
+
+    @Before
+    @Override
+    public void setUp() {
+        super.setUp();
+        this.mult = multiplicative();
+    }
+
+    @Test
+    public void oneAddition() throws Exception {
+        BinaryExpr tree = parseTreeFor(mult + " + " + mult);
+        assertEquals(tree.getOp(), BinaryOpType.ADD);
+    }
+
+    @Test
+    public void oneSubtraction() throws Exception {
+        BinaryExpr tree = parseTreeFor(mult + "   - " + mult);
+        assertEquals(tree.getOp(), BinaryOpType.SUB);
+    }
+
+    @Test
+    public void additiveCombination() throws Exception {
+        BinaryExpr tree = parseTreeFor(mult + " + " + mult + '-' + mult + '-' + mult + "   +" + mult);
+        assertEquals(tree.getOp(), BinaryOpType.ADD);
+    }
+
+    @Test(expected = ClassCastException.class)
+    public void notAnAdditiveExpression() throws Exception {
+        parseTreeFor(mult + "!" + mult);
+    }
+
+    private BinaryExpr parseTreeFor(String text) throws RecognitionException {
+        JSLParser parser = parserOver(text);
+        return (BinaryExpr)parser.additive_expression();
+    }
+
+    protected String additive() {
+        return "(" + multiplicative() + " + " + multiplicative() + ")";
+    }
+}